30 THE CANADIAN ENTOMOLOGIST. 



[69.] 99. Laccophilus Biguttatus, Kirby. — Length of body 2 linos. 

 ( )ne specimen taken. 



Body, very smooth, glossy. Head, dirty-yellow ; palpi and antennae 

 dusky at the tip ; manitrunk (the manitrunk is that part of the trunk that 

 bears the arms or fore-legs: it includes the prothorax and antepectus), dirty 

 yellow ; elytra, embrowned cinereous, with a line of punctures, as in the 

 other species, adjacent to the suture, and a pale yellow, indistinct, oblong, 

 anterior, marginal spot: legs, dirty yellow ; posterior tarsi, dusky; alitrunk 

 and abdomen, nigro-piceous ; apex of the segments of the latter reddish- 

 yellow. This species is smaller than L. minutus, which it resembles, and 

 the colour of the elytra and underside of the body differs. [Inserted as a 

 probable synonym of L. fasciatus Aube, in Le Conte's list ; in Melsheimer*s 

 Catalogue it is recorded as synonymous with L. proximus Say and L. Ameri- 

 can us Aube.] 



FAMILY DYTISC1 1).* - . 



100. Colymbetes Semipunctatus, Kirby. One specimen only taken. 

 Length of body 3 J/4 lines. 



Body oblong, glossy, very black, above very slightly bronzed; under a 

 powerful magnifier the whole upper surface is most minutely reticulated, 

 and the under covered, with longitudinal scratches. Head with a pair of 

 vertical red crescents placed transversely, and scarcely visible except when 

 the sun shines ; upper-lip, palpi, and antennae ferruginous ; mandibles 

 black ; prothorax, anteriorly with a continuous transverse marginal series of 

 punctures, posteriorly with one widely interrupted in the middle, and in 

 the disk with a minute furrow ; elytra with a triple dorsal series of punctures 

 not regularly or singly arranged, with other scattered punctures interjacent, 

 especially towards the apex, on the side the punctures, which are not 

 numerous, are scattered without order; in the sutural series the punc- 

 tures are distant and single ; beyond the middle of each elytrum, not far 

 from the lateral margin, is a red streak, not distinctly visible except in a 

 strong light: the arms are piceous, and the four anterior tarsi ferruginous. 

 [Belongs to Agabus. Taken at Grimsby, Ont., by Mr. Pettit.] 



[70.] 101. Colymbetes (Agabus) Bicolor, Kirby. — Length of body 

 3^ lines. A single specimen taken in Lat. 54 . 



Body nearly elliptical, convex, smooth, glossy, and very black. Reti- 

 culations more visible in the head than in the rest of the surface : a pair of 

 round, obscure red spots in the vertex ; mouth palpi, and antennae testa- 

 ceous : anterior transverse series of the prothorax with single punctures at 



